2012-07-13-ExpandUDiv.ll
3.42 KB
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; RUN: opt -loop-reduce -S < %s | FileCheck %s
;
; PR11356: likely wrong code bug
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-darwin"
@g_66 = global [1 x i32] zeroinitializer, align 4
@g_775 = global i32 0, align 4
@g_752 = global i32 0, align 4
@g_3 = global i32 0, align 4
; Ensure that %div.i.i.us is not hoisted.
; CHECK-LABEL: @main(
; CHECK: for.body.i.i.us:
; CHECK: %div.i.i.i.us
; CHECK: %cmp5.i.i.us
define i32 @main() nounwind uwtable ssp {
entry:
%l_2 = alloca [1 x i32], align 4
%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* %l_2, i64 0, i64 0
store i32 0, i32* %arrayidx, align 4
%tmp = load i32, i32* @g_3, align 4
%idxprom = sext i32 %tmp to i64
%arrayidx1 = getelementptr inbounds [1 x i32], [1 x i32]* %l_2, i64 0, i64 %idxprom
%tmp1 = load i32, i32* %arrayidx1, align 4
%conv.i.i = and i32 %tmp1, 65535
%tobool.i.i.i = icmp ne i32 %tmp, 0
br label %codeRepl
codeRepl.loopexit.us-lcssa: ; preds = %for.body.i.i, %codeRepl5
br label %codeRepl.loopexit
codeRepl.loopexit: ; preds = %codeRepl.loopexit.us-lcssa.us, %codeRepl.loopexit.us-lcssa
br label %codeRepl
codeRepl: ; preds = %codeRepl.loopexit, %entry
br i1 %tobool.i.i.i, label %codeRepl.split.us, label %codeRepl.codeRepl.split_crit_edge
codeRepl.codeRepl.split_crit_edge: ; preds = %codeRepl
br label %codeRepl.split
codeRepl.split.us: ; preds = %codeRepl
br label %for.cond.i.i.us
for.cond.i.i.us: ; preds = %for.inc.i.i.us, %codeRepl.split.us
%tmp2 = phi i32 [ 0, %codeRepl.split.us ], [ %add.i.i.us, %for.inc.i.i.us ]
br label %codeRepl5.us
for.inc.i.i.us: ; preds = %for.body.i.i.us
%add.i.i.us = add nsw i32 %tmp2, 1
store i32 %add.i.i.us, i32* @g_752, align 4
br label %for.cond.i.i.us
for.body.i.i.us: ; preds = %codeRepl5.us
%div.i.i.i.us = udiv i32 1, %conv.i.i
%cmp5.i.i.us = icmp eq i32 %div.i.i.i.us, %tmp2
br i1 %cmp5.i.i.us, label %codeRepl.loopexit.us-lcssa.us, label %for.inc.i.i.us
codeRepl5.us: ; preds = %for.cond.i.i.us
br i1 true, label %codeRepl.loopexit.us-lcssa.us, label %for.body.i.i.us
codeRepl.loopexit.us-lcssa.us: ; preds = %codeRepl5.us, %for.body.i.i.us
br label %codeRepl.loopexit
codeRepl.split: ; preds = %codeRepl.codeRepl.split_crit_edge
br label %for.cond.i.i
for.cond.i.i: ; preds = %for.inc.i.i, %codeRepl.split
%tmp3 = phi i32 [ 0, %codeRepl.split ], [ %add.i.i, %for.inc.i.i ]
br label %codeRepl5
codeRepl5: ; preds = %for.cond.i.i
br i1 true, label %codeRepl.loopexit.us-lcssa, label %for.body.i.i
for.body.i.i: ; preds = %codeRepl5
%cmp5.i.i = icmp eq i32 0, %tmp3
br i1 %cmp5.i.i, label %codeRepl.loopexit.us-lcssa, label %for.inc.i.i
for.inc.i.i: ; preds = %for.body.i.i
%add.i.i = add nsw i32 %tmp3, 1
store i32 %add.i.i, i32* @g_752, align 4
br label %for.cond.i.i
func_4.exit: ; No predecessors!
ret i32 0
}